Atmel RF transceivers target keyless entry, remote start

SAN JOSE, Calif.--On the eve of major automotive shows in Germany
and Detroit, Atmel Corp. has introduced a family of
microcontroller-based RF transceivers for applications including
keyless entry and remote start.

The three new devices (ATA5831, ATA5832 and ATA5833) mix RF
functionality with an Atmel 8-bit AVR microcontroller core and claim low
power consumption. The devices use blocking techniques to eliminate
disturbances, which allows the ICs to be awakened only when
necessary.

With the industry's lowest power consumption, high sensitivity and
high output power, the three new devices (ATA5831, ATA5832 and
ATA5833) are ideal for automotive applications including remote
keyless entry (RKE), passive entry go (PEG), remote start (RS) and
tire pressure monitoring (TPMS) systems. This new RF family is also
ideal for various smart RF applications including remote control
systems such as garage door openers or telemetering applications.

FeaturesThe new RF transceiver family also provides sensitivity at -123dBm
typ. (0.75Kbit/s, FSK, Manchester code, at 433.92MHz) and -109dBm
typ. (at 20Kbit/s, ASK, Manchester code, at 433.92MHz),
respectively. Combined with the high output power of up to 14.5dBm
typ., the devices can function over long distances, Atmel said.

Pricing, availabilitySamples of Atmel’s ATA5831, ATA5832 and ATA5833 in 5mm x 5mm small
QFN32 packages are available now starting at $2.90 in 50,000-piece
quantities. Car access kits (ATAK51002-V2) to support design-in and
shorten time-to-market will be available in November 2012.